Can you help by answering this question?

What is line voltage and phase voltage?

13 views
in Electronics Engineering by
A thin P-type silicon sample is uniformly illuminated with light which generates excess carriers. The recombination rate is directly proportional to

(A) the minority carrier mobility

(B) the minority carrier recombination lifetime

(C) the majority carrier concentration

(D) the excess minority carrier concentration

Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
Are you a robot ? (Y = Yes / N = No)
To avoid this verification in future, please log in or register.

1 Answer

0 votes
by

A thin P-type silicon sample is uniformly illuminated with light which generates excess carriers. The recombination rate is directly proportional to the excess minority carrier concentration

Related questions

1 answer 16 views

Which is a semiconductor: copper, silicon, or neon?

asked Jul 1 by Shimroz123
1 answer 31 views

Which of the following elements are used as dopants in silicon or germanium semiconductors? A) Antimony B) Phosphorus C) Arsenic D) All the above

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 29 views

Silicon steel is used in electrical machines because it has?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 32 views

Impurity atoms to be added to pure silicon in order to make a p-type semiconductor belongs to (a) Phosphorous (b) Boron (c) Antimony (d) Aluminium 

asked May 25, 2018 in Semiconductor by Shimroz123
0 answers 14 views

Silicon is not suitable for fabrication of light emitting diodes because it is : a. An indirect band gap semiconductor b. A direct band gap semiconductor c. A wide band gap semiconductor d. A narrow band gap semiconductor

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
1 answer 23 views

Which type of corona generates much less ozone? A) A positive corona  B) A negative corona C) Both positive corona and negative corona generate same amount of ozone D) No ozone is generated by either type of corona

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 25 views

A loss less transmission line having Surge Impedance Loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30%. Then, SIL of the compensated transmission line will be (A) 1835 MW (B) 2280 MW (C) 2725 MW (D) 3257 MW

asked May 25, 2018 in Power system by Shimroz123
1 answer 12 views
1 answer 33 views

What is the channel capacity of a noisy channel with conditional probability of error p = 1/2? A) 0 B) 1 C) Infinity D) 2  

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
0 answers 12 views

A silicon p-n junction at a temperature of 20 °C has a reverse saturation current of 10 pA. The reverse saturation current at 40 °C will approximately be (a) 30 pA (b) 40 pA (c) 50 pA (d) 60 pA

asked May 25, 2018 in Physics by Shimroz123
1 answer 30 views

Which of the following lamp light output is comparable with that of day light?  (a) Fluorescent lamp (b) Sodium vapour lamp (c) Mercury vapour lamp (d) Halogen lamp 

asked May 13, 2018 in Utilization of electrical energy by Shimroz123
1 answer 147 views

The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper tube of 60 mm diameter is  (A) 3.2 µH (B) 3.2 mH (C) 32.0 mH (D) 3.2 H

asked May 18, 2018 in Engineering electromagnetic by Shimroz123
1 answer 12 views

An iron ring of mean circumference 80 cm is uniformly wound with 500 turns of wire and carries 0.8A. Find the magnetic field strength. 

asked Sep 2, 2018 by Shimroz123
1 answer 23 views

Majority carriers in n type semiconductor are_______. A. Electrons B. Holes C. Both D. None

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
1 answer 18 views

Which of the following is the name given to resistance of thin films that are uniform in thickness? A) Area resistance B) Sheet resistance C) Filmy resistance D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
0 answers 12 views

In a clipper circuit with silicon diode and bias of V volts, the clipping level is (a) 0.7 V (c) V (b) V + 0.7 (d) 2V + 0.7

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 4 views

In flame atomizer the sample is converted into fine spray by (A) burner (B) fuel (C) nebulizer (D) none of these

asked Apr 23, 2018 in Electronics Engineering by Shimroz123
0 answers 45 views

Which type of system puts the user into direct conversation with the computer through a keyboard  (1) real time processing (2) Interactive processing (3) batch processing (4) timesharing 

asked Apr 11, 2018 in Computer Engineering by Shimroz123
1 answer 12 views

The basic element of radio communication system which generates radio waves is  1. micro phone 2. transmitter 3.transmitting antenna 4. Loudspeaker 

asked May 13, 2018 in Electronics communication by Shimroz123
1 answer 16 views

Which type of flow is measured by hot wire anemometer and describe its working principle with suitable diagram. 

asked Sep 13, 2018 by Shimroz123
1 answer 75 views

Give broad classification of maintenance with meaning of each type. State the factors on which ideal maintenance of electric rolling stock is judged. Give any two means to improve any one factor of these.

asked Sep 2, 2018 by Shimroz123
0 answers 18 views

The EM wave which does not propagate through a rectangular waveguide with a=30 mm & b=15 mm is : a. EM wave of frequency 4.5 GHz b. EM wave of frequency 5.5 GHz c. EM wave of frequency 50 GHz d. EM wave of frequency 300 GHz

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
0 answers 14 views

Which of the following is a low efficient light source?  A) CFL B) HPSV Lamp C) LPMV Lamp D) Tungsten Lamp

asked Apr 9, 2018 in Electrical Engineering by Shimroz123
1 answer 30 views

Light is confined within the core of a simple optical fiber by:  (1) Refraction. (2) Total internal reflection at the outer edge of the cladding. (3) Total internal reflection at the core cladding boundary. (4) Reflection from the fiber's plastic coating.

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 11 views

In an npn transistor, _____ are the minority carriers.   (a) Free electrons (b) Acceptor ions (c) Donor ions (d) Holes

asked May 13, 2018 in Electronics Engineering by Shimroz123
1 answer 5 views

A power diode has lightly doped n type substrate sandwiched between heavily doped p and n regions  (a) to increase reverse breakdown voltage (b) to reduce ohmic loss under forward bias (c) to decrease switching time of the power diode (d) to improve transient behaviour of the diode

asked May 15, 2018 in Diode by Shimroz123
1 answer 19 views

With a 12 V supply, a silicon diode, and a 370 - ohm resistor in series, what voltage will be dropped across the diode? a) 0.3V b) 0.7V c) 0.9V d) 1.4V

asked Apr 14, 2018 in Instrumentation and control by Shimroz123
1 answer 11 views

The rotor frequency for a 3-phase 6-pole, 1000 r.p.m. induction motor with a slip of 0.04 is (a) 2 Hz (b) 4 Hz (c) 6 Hz (d) 8 Hz  

asked May 25, 2018 in Induction Machine by Shimroz123
0 answers 16 views

A commutator with a diameter of 50 cm rotates at 1000 r.p.m. If brush width is 1.5 cm, the time of commutation will be (a) 0.168 m sec (b) 0.374 m sec (c) 0.481 m sec (d) 0.573 m sec

asked May 25, 2018 in Electrical Machine by Shimroz123
1 answer 21 views

An 800 kV transmission line has a maximum power transfer capacity of P. If it is operated at 400 kV with the series reactance unchanged, the new maximum power transfer capacity is approximately (A) P (B) 2P (C) P / 2 (D) P / 4

asked May 25, 2018 in Power system by Shimroz123
1 answer 12 views

Power (P) in a 3 phase circuit with two watt meters at unity power factor is (W1 & W2 = watt meter readings)

asked May 15, 2018 in Electrical Engineering by Shimroz123
0 answers 21 views

A dc shunt motor runs at 500 r.p.m at 220 V. A resistance of 4.5 Ω is added in series with the armature for speed control. The armature resistance is 0.5 ohms. The current to stall the motor will be (1) 44 A (2) 50 A (3) 44.4 A (4) 60 A  

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

List two types of oscillator, which generates frequency in RF range.

asked Sep 5, 2018 by Shimroz123
1 answer 18 views

A very thin deposit of metal is called as

asked May 15, 2018 in Electrical Engineering by Shimroz123
1 answer 6 views

The basic limitation of a P-action only controller is (A) very slow error correction (B) high overshoot (C) non-zero offset (D) instability of process 

asked Apr 23, 2018 in Electronics Engineering by Shimroz123
0 answers 20 views

One of the necessary and sufficient condition for a network function N(s)=p(s)/q(s) to be a transfer function is that  A) The coefficients of the polynomial p(s) and q(s) must be real and those for q(s) must be positive B) Coefficients of p(s) and q(s) must be real and positive C) Coefficients of p(s) must be positive and real but coefficients of q(s) can be negative also D) Degree of p(s) and q(s) may differ by either zero or one only

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 20 views

About how many times longer would a 10 watt light bulb be able to burn compared to a 100 watt bulb with the same energy?  (A) 10 times longer (B) 100 times longer (C) Same time (D) None of the above

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 22 views
1 answer 17 views

Light load adjustments for induction type energy meters are usually done at   (a) 10% of full load current (b) 5% of full load current (c) 50% of full load current (d) 1% of full load current 

asked May 13, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 29 views

In a sample-and-hold circuit, the aperture time is (A) time required following a sample (B) time required for the switch to open (C) transition time interval between sample and hold (D) time from the hold command to the opening of the switch 

asked Jun 4, 2018 in Digital Instrumentation by Shimroz123
1 answer 15 views
3 answers 19 views

A light emitting diode (L.E.D.) can be made from:

asked May 22, 2018 in Electronics Engineering by Shimroz123
1 answer 147 views

PLAs, CPLDs, and FPGAs are all which type of device?  (1) SLD (2) PLD (3) EPROM (4) SRAM

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 41 views

Transformer coupling introduces which type of distortion?

asked Mar 9, 2018 in Electronics Engineering by Quiz
0 answers 18 views

Special handling precautions should be taken when working with MOS devices. The statement which is not true is : a. All test equipment should be grounded. b. MOS devices should have their all leads shorted together during shipment and storage. c. Never remove or insert MOS devices with the power on. d. MOS devices do not require grounding straps used for CMOS.

asked Apr 12, 2018 in Electronics Engineering by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units

8,450 questions

7,047 answers

133 comments

3,086 users

...